Midterm question Q3B

[Paige Lee 1A]

Could someone please explain why the correct answer is B?

Which combination of solutions of HCL and NaOH would produce the largest delta T?
A. 50mL of 1M HCl with 50mL of 1M NaOH
B. 50mL of 2M HCl with 50mL of 2M NaOH
C. 100mL of 1M HCl with 50mL of 2M NaOH
D. 100mL of 1M HCl with 100mL of 1M NaOH

[Kevin Antony 2B]

We know that neutralization reactions produce heat when they occur. We want the most heat released to generate the largest delta T possible. Therefore, we look to see which answer choice has the most moles reacting which ends up making the answer choice B.

[105335337]

For this question, delta H will be the largest for the most moles because its J/mol. Delta H impacts delta T, so B, which has the most moles, is the correct answer.